snd_ctl_sync_vmaster
void snd_ctl_sync_vmaster(struct snd_kcontrol *kctl, bool hook_only);
#define snd_ctl_sync_vmaster_hook(kctl) snd_ctl_sync_vmaster(kctl, true)
EXPORT_SYMBOL_GPL(snd_ctl_sync_vmaster);
snd_ctl_sync_vmaster(spec->vmaster_mute.sw_kctl, false);